Here is a list of Harrison's best fights. For a list of Harrison's losses, refer to "Kayla Harrison Losses".
On June 7, 2025 Kayla Harrison fought Julianna Peña in a bantamweight title fight for Peña's UFC Women's Championship title. Harrison was 34 years old and with a record of 19-1 (14), and Peña was 35 years old and with a record of 12-5 (8). Harrison stopped Julianna Peña via 2nd-round submission and is crowned the new UFC bantamweight champion.
On April 13, 2024 Kayla Harrison faced off against Holly Holm in a bantamweight bout at age 33. She was coming in with a record of 17-1 (13), and Holm was 42 years old and with a record of 15-6 (8). Harrison stopped Holly Holm via submission.
On August 19, 2021 Kayla Harrison faced off against Genah Fabian in a lightweight bout at age 31. She was coming in with a record of 11-0 (9), and Fabian was 31 years old and with a record of 4-1 (3). Harrison stopped Genah Fabian via TKO.
On July 1, 2022 Kayla Harrison faced off against Kaitlin Young in a lightweight bout at age 31. She was coming in with a record of 14-0 (11), and Young was 36 years old and with a record of 12-12-1 (8). Harrison stopped Kaitlin Young via TKO.
On May 6, 2021 Kayla Harrison faced off against Mariana Morais in a lightweight bout at age 30. She was coming in with a record of 9-0 (7), and Morais was 26 years old and with a record of 16-10 (12). Harrison stopped Mariana Morais via TKO.
On June 25, 2021 Kayla Harrison faced off against Cindy Dandois in a lightweight bout at age 30. She was coming in with a record of 10-0 (8), and Dandois was 36 years old and with a record of 16-6 (13). Harrison stopped Cindy Dandois via submission.
On October 5, 2024 Kayla Harrison faced off against Ketlen Vieira in a bantamweight bout at age 34. She was coming in with a record of 18-1 (13), and Vieira was 33 years old and with a record of 14-3 (6). Harrison won the fight via 3-round unanimous decision.
On December 31, 2019 Kayla Harrison faced off against Larissa Pacheco in a lightweight bout at age 29. She was coming in with a record of 7-0 (5), and Pacheco was 25 years old and with a record of 13-3 (12). Harrison won the fight via 5-round unanimous decision.
On May 6, 2022 Kayla Harrison faced off against Marina Mokhnatkina in a lightweight bout at age 31. She was coming in with a record of 13-0 (10), and Mokhnatkina was 33 years old and with a record of 6-2 (4). Harrison won the fight via 3-round unanimous decision.
On October 11, 2019 Kayla Harrison faced off against Bobbi Jo Dalziel in a lightweight bout at age 29. She was coming in with a record of 6-0 (5). Harrison stopped Bobbi Jo Dalziel via submission.
